Union ZIP Code List — Boone County, KY

There is one unique ZIP code in Union, Kentucky and it is 41091. Area code: 859.

ZIP codes

56.17

sq mi land

0.18

sq mi water

859

area code

Union, KY ZIP code map

About Union, KY

Union is a charming city located in Boone County, Kentucky. It offers a blend of suburban living and a close-knit community atmosphere. With its scenic landscapes and growing population, Union presents a delightful place for families and individuals alike.

Location & geography

Union is situated approximately 16 miles south of Cincinnati, Ohio, making it a convenient location for those commuting to larger cities. The city is surrounded by nearby towns such as Florence, which is about 7 miles northeast, and Burlington, located about 5 miles to the west. Covering a land area of 56.17 square miles, Union features mild elevations along with a small water area of 0.18 square miles.

Community & economy

The character of Union reflects a strong sense of community with local events and gatherings, fostering meaningful connections among residents. The local economy thrives on various sectors, including retail and service industries, while also benefiting from proximity to larger urban centers. Daily life in Union combines the tranquility of suburban living with access to essential amenities and recreational activities, making it an inviting place to call home.

Transportation

Union is easily accessible via Interstate 71, which connects to nearby cities and regions. The closest major airport is Cincinnati/NKY International Airport, situated roughly 12 miles to the northeast, providing residents with national and international travel options. Public transit is limited, emphasizing the reliance on personal vehicles for local commuting.

History

Founded in the early 19th century, Union has grown from a small settlement into a vibrant community, reflecting the development patterns of Boone County. Throughout its history, the area has been influenced by agriculture as a key industry, contributing to its initial growth and subsequent suburban expansion. Notable events in Union's history include the establishment of local schools and community centers that serve as focal points for social interaction.

Did you know?

One surprising fact about Union is that it is one of the fastest-growing cities in Kentucky, attracting new residents and businesses alike. Additionally, the city's rural charm is complemented by modern amenities, creating a unique blend of old and new.

ZIP codes for Union, KY (1)

ZIP code	City	County	Map
41091	Union	Boone	View map

Demographics & statistics

24,842

Population

37.1

Median age

$131,442

Median household income

$49,363

Per capita income

$336,300

Median home value

$1,609

Median monthly rent

92.5%

Home ownership

2.7%

Poverty rate

1.2%

Unemployment

7,571

Housing units

52.2%

Bachelor's or higher

Age distribution

Male Female

924

Under 5

852

1,309

5–9

1,208

1,383

10–14

1,275

932

15–19

859

537

20–24

496

922

25–34

851

2,035

35–44

1,878

1,553

45–54

1,433

527

55–59

487

850

60–64

785

1,262

65–74

1,164

554

75–84

511

133

85+

122

← Male

Female →

Age summary

Group	Count	%
Under 18	8,103	32.6%
18 and over	16,739	67.4%
65 and over	3,746	15.1%
Median age	37.1 years

Race & ethnicity

White 89.6%

Two or more races 3.6%

Asian 2.7%

Hispanic or Latino 2%

Black or African American 1.5%

Other race 0.6%

Group	Count	%
White	22,710	89.6%
Two or more races	919	3.6%
Asian	683	2.7%
Hispanic or Latino	502	2%
Black or African American	369	1.5%
Other race	156	0.6%

Household income

Under $10k 1.6%

$10k–$15k 0.3%

$15k–$25k 2.5%

$25k–$35k 2.5%

$35k–$50k 6.5%

$50k–$75k 10.8%

$75k–$100k 9.4%

$100k–$150k 26.4%

$150k–$200k 18.0%

$200k+ 22.0%

Range	% of households
Under $10k	1.6%
$10k–$15k	0.3%
$15k–$25k	2.5%
$25k–$35k	2.5%
$35k–$50k	6.5%
$50k–$75k	10.8%
$75k–$100k	9.4%
$100k–$150k	26.4%
$150k–$200k	18.0%
$200k+	22.0%
Median income	$131,442

Housing

Home values

Under $50k 1.0%

$50k–$100k 0.7%

$100k–$150k 5.0%

$150k–$200k 7.0%

$200k–$300k 26.6%

$300k–$500k 42.4%

$500k–$1M 16.8%

$1M+ 0.5%

Housing overview

Metric	Value
Median home value	$336,300
Median rent / month	$1,609
Owner occupied	92.5%
Renter occupied	7.5%
Vacant	3.7%
Single-family detached	88.4%
Large apartment buildings	0.6%
Mobile homes	0.7%
Median rooms	8.0
Avg household size (owned)	3.05

Year built

Era	%
2020 or later	1.5%
2010–2019	20.2%
2000–2009	35.5%
1990–1999	21.5%
1980–1989	7.0%
1970–1979	7.2%
1960–1969	2.4%
1950–1959	1.9%
1940–1949	0.9%
1939 or earlier	2.0%

Bedrooms

Size	% of units
No bedroom (studio)	1.3%
1 bedroom	1.2%
2 bedrooms	10.4%
3 bedrooms	29.6%
4 bedrooms	48.7%
5+ bedrooms	8.8%

Vehicles per household

Vehicles	% of households
No vehicle	0.9%
1 vehicle	19.7%
2 vehicles	45.1%
3 or more	34.2%

Heating fuel

Fuel type	%
Utility gas	57.2%
Electricity	31.7%
Propane / LP gas	8.5%
Fuel oil	1.1%
Wood	0.8%
No fuel used	0.1%

Households & families

Household type	Count	%
Married-couple family	5,771	73.4%
Cohabiting couple	162	2.1%
Male householder, no spouse	982	12.5%
Female householder, no spouse	950	12.1%
Households with children under 18	3,566	45.3%
Households with seniors (65+)	2,495	31.7%
Average household size	3.16

Marital status

Status	Male	Female
Never married	22.6%	19.6%
Married	65.4%	65.7%
Separated	0.3%	2.4%
Widowed	1.1%	4.9%
Divorced	10.5%	7.4%

Education

Less than 9th grade 0.7%

Some HS, no diploma 1.7%

HS graduate 22.7%

Some college, no degree 14.8%

Associate's degree 8.0%

Bachelor's degree 31.7%

Graduate / professional 20.5%

Metric	%
HS diploma or higher	97.6%
Bachelor's or higher	52.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	479	5.7%
Kindergarten	594	7.1%
Elementary school	4,128	49.4%
High school	1,750	20.9%
College / grad school	1,407	16.8%

Employment

Industry of employment

Education & healthcare 22.1%

Manufacturing 17.4%

Professional & management 10.0%

Retail trade 9.6%

Finance & real estate 8.0%

Transportation & utilities 6.3%

Arts, food & hospitality 6.0%

Other services 5.5%

Wholesale trade 5.1%

Construction 4.5%

Public administration 3.6%

Information 1.5%

Agriculture & mining 0.4%

Occupation

Category	%
Management, business & arts	53.5%
Service	11.1%
Sales & office	15.9%
Natural resources & construction	7.1%
Production & transportation	12.4%

Employment type

Type	%
Private sector	84.6%
Government	13.2%
Self-employed	2.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	81.7%
Carpool	5.1%
Public transit	0.7%
Walk	0.2%
Other means	0.9%
Avg commute (minutes)	28.3

Poverty

All people 2.7%

Under 18 years 1.9%

18 and over 3.2%

Married-couple families 1.9%

Female-led households 1.1%

Income support

Source	% of households
Social Security	30.4%
Retirement income	27.9%
Supplemental Security	2.8%
Cash public assistance	3.2%
Food stamps / SNAP	1.0%

Health indicators

Condition	%
High blood pressure	32.7%
High cholesterol	33.8%
Heart disease	4.7%
Stroke	2.0%
Asthma	9.6%
Arthritis	24.2%
Kidney disease	2.1%
Pulmonary disease	5.8%
Cancer	5.7%

Behavior / access	%
Binge drinking	17.0%
No physical activity	20.4%
Less than 7 hrs sleep	33.5%
Fair or poor health	11.9%
Poor mental health	15.2%
Poor physical health	9.1%
No health insurance	6.8%
Visited doctor (checkup)	76.6%
Visited dentist	68.0%
Cholesterol screening	92.5%
Teeth loss	9.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,446	8.6%

Disability	%
Any disability	8.6%
Under 18	1.9%
18–64 years	7.3%
65 and over	27.8%

Health insurance coverage

Type	%
Private insurance	81.2%
Public insurance	26.4%
Uninsured under 19	12.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	23,066	92.9%
Spanish	313	1.4%
Other Indo-European	100	0.4%
Asian & Pacific Islander	95	0.4%
Other languages	117	0.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	23,810	95.8%
Born in same state	23,664	95.3%
Born in different state	11,357	45.7%
Foreign born	146	0.6%
Naturalized citizen	1,032	4.2%
Not a US citizen	653	63.3%

Ancestry

Ancestry	Count	%
Italian	4,371	17.6%
French	3,626	14.6%
Arab	1,023	4.1%
English	285	1.1%
Irish	116	0.5%

Ancestry	Count	%
Polish	63	0.3%
German	53	0.2%
Norwegian	35	0.1%
Dutch	15	0.1%

Technology access

Metric	% of households
Computer access	31.7%
Internet access	97.1%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What is the ZIP code for Union, KY?

Union, KY has one ZIP code: 41091.

What is the main ZIP code for Union, KY?

The primary ZIP code for Union, KY is 41091. The city uses area code 859 for phone service.

What county is Union, KY in?

Union is located in Boone County, Kentucky.

How many ZIP codes are in Union, KY?

Union, KY has 1 ZIP code.

What ZIP code covers the downtown Union area and surrounding neighborhoods in Boone County?

The downtown Union area and surrounding neighborhoods are served by ZIP code 41091, which encompasses the entire city of Union, Kentucky.

If I'm sending mail to a business located on Main Street in Union, KY, what ZIP code should I use?

You should use ZIP code 41091 for any addresses on Main Street or anywhere else within Union, as this is the single ZIP code that covers the entire city.